Q.1
Which of the following use ECM for different applications?
  • a) Gas turbines
  • b) Jet engines
  • c) Bio medical implants
  • d) All of the mentioned
Q.2
Which of the following processes can be done using ECM?
  • a) Die sinking
  • b) Profiling and contouring
  • c) Drilling and trepanning
  • d) All of the mentioned
Q.3
Which of the following material cannot be machined using ECM?
  • a) High strength alloys
  • b) Hardened steels
  • c) Nonconductive materials
  • d) All of the mentioned
Q.4
ECM is used to _________ the sharp edges produced after rough cuts.
  • a) Enhance
  • b) Dull
  • c) Improve
  • d) None of the mentioned
Q.5
ECM is usually characterized as low accuracy machining, for which of the following reason?
  • a) Narrow gap width
  • b) Wider gap width
  • c) High current densities
  • d) All of the mentioned
Q.6
In micro ECM, which of the following is used as micro tool?
  • a) Electrolyte jet
  • b) Electrodes
  • c) Power supply
  • d) All of the mentioned
Q.7
Micro ECM is used to machine which type of parts?
  • a) Large parts
  • b) Micro parts
  • c) Normal sized parts
  • d) All of the mentioned
Q.8
Which of the following produces small indents and cavities using micro ECM?
  • a) Moving the work piece
  • b) Switching the pulse current
  • c) Moving the work piece & Switching the pulse current
  • d) None of the mentioned
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